Question

Given that 8x - 7y = 11
Find x when y = 3

Answer 1

Explanation:

8x-7y=11

8x-7×3=11

8x-21=11

8x=11+21

8x=32

x=32/8

x=4

Answer 2

x = 4

Explanation:

Substitute 3 in for y.

8x - 7(3) = 11 (Given)

8x - 21 = 11 (Simplified)

8x = 32 (Added 21 on both sides)

x = 4 (Divided 8 on both sides)